Heater and steam-generator.



PATENTBD JULY 14, 1903i o. R. RAND, JB.

HEATER AND STEAM GENERATOR.

y APPLIUATIONIILBD 00T. a. 1902'.

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s crans co. Puma-umd., wAswmarcn n UNITED STATES Patented .my 14, 190e".

` PATENT OFFICE.

HEATER AND STEAM-G EN ERATOR.

SPECIFICATION forming part of Letters Patent No. 733,747, dated July 14, 1903.

l Application led October 3, 1902. Serial No. 125,791. (No model.)

To all whom t may concern/.-

Be it known that I, OSCAR RIPLEY RAND, Jr., a citizen of the United States, and a resident of Smithfield, in the county of Johnston and State of North Carolina, have invented a new and Improved Combined Heater' and Steam-Generator, of which the following is a full, clear, and exact description.

My invention is more particularly intended for use by farmers who grow tobacco; and my object is to provide a heater and steamgenerator of improved construction by means of which the necessary degree of heat or moisture may be maintained in the tobacco-barn or pack-house during or after the curing of the tobacco to maintain the proper condition of the atmosphere as required by the tobacco at dierent stages.

The convenience and efciency'of my invention will be readily apparent to the practical tobacco grower. The following specification will therefore be mainly conned to a particular description of the novel construction and arrangement of parts, and the claims will dene the scope of the invention.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

IFigure l is a broken side elevation of a combined heater and steam-generatorA constructed in accordance with my invention. Fig. 2 is a transverse sectional elevation, the section being taken on the line 2 2 of Fig. l. Fig. 3 is a plan View with the parts in section, and Fig. 4 is afront view of the heatershell.

A shell A forms the body of the heater, and a stand-pipe B the boiler. The shall A has an exterior air -box a extending vertically at the front, the upper end having airinlets ct, and at the lower end said box communicates with the interior ofthe shell forsupplying air to the tire, this arrangement serving to heat the air before it enters the furnace the better to support combustion. A suitable fuel-opening is provided in the top of the shell near the front and is normaily closed by a cover a2, While at the rear of the shell is arranged the otake a3 for the products of combustion.

The stand-pipe B is preferably located in is normally closed by a lid a5.

the shell A at a point back of the center and is provided with lateral tubes b on each side, the outer ends of the tubes having caps b. The stand-pipe and tubes thus arranged form the back of thel furnace chamber or firebox A.

The lower end of the stand-pipe is supported on the bottom 0,4 of the shell A and connects by suitableA connections at C with the pipe D, which ranges below the shell, said pipe at one end, d, being connected in practice With an inspirator (not shown) and having a check-valve d and cut-olf valve cl2, while the opposite end, cl3, of the pipe D beyond the coupling C forms a blow-off.

. Near the upper end the stand-pipe B above the shell A is provided with a water-gage E and gage-cocks F F', The head B of the stand-pipe is secured by a flange-coupling and carries a pipe b2, having a steam-outlet pipe b3, and is equipped with the usual safety.- valve b4 and steam-gage b5.

In the top of the shell A, between the standpipe B and the fuel-inlet, is an opening which Thus when said lid is raised, the cover a2 of the inlet removed, and the coupling C disconnected the stand-pipe, with its described appurtenances, may be removed for cleaning Vor repairs by turning the stand-pipe and slipping it forwardly and upwardly.

The apparatus affords a convenient and eiiicient means for generating steam which may be discharged to maintain the desired moisture for certain stages in the treatment of the tobacco, and the furnace may be caused to generate a gentle heat or a very high heat when needed, as the fire-box, it Will be observed, has considerable capacity. The apparatus also may be used to extinguish a lire occurring in the drying-room by filling said room with steam. I

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. Acombined heater and steam-generator comprising a shell forming a furnace, and a stand-pipe therein having lateral tubes and forming the rear wall of the fire-chamber of the heater, said pipe extending at its upper end through the shell to the exterior 'of the heater and projecting above the latter.

IOO

2. The combination with a shell having space at the front for a re, an exterior airbox at the front leading to said fire-space, and an outlet-flue at the back, of a stand-pipe at a point back of the center of the shell, and having laterally-projecting tubes, said standpipe extending above and being removable through the top of the shell.

3. The combination with a shell, having a space forming a ire-box, of a boiler in the form of a stand-pipe removably held in the shell, the lower end of the boiler having a water-inlet extending through the bottom of the shell and a water-pipe connecting with said inlet, the upper end of the stand-pipe having directly connected therewith a watergage and gage-cocks, and being provided with a steam-outlet.

4f. The combination with the shell having a OSCAR RIPLEY RAND, JR.

Witnesses:

ALLEN K. SMITH, C. V. JOHNSON. 

